Improvement in paper-making machinery



@met @with WILLIAM W. HAIIDING, vor PHILADELPHIA, PII-nnerLVANIA Letters Patent No. 100,7 55, datecLMarch 15, 1870.

IMPROVEMENT IN PAPER-MAKING- MACHINERY.

The Schedule referred to in` these Letters Pa-tex'xt and making parto! the same.

To all whom it may concern: l

Beit known' that I, WILLIAM W. HAnDINe, of the cityof Philadelphia, inthe Strate of Penusylvnnin, have invented a. new and useful Improvement in Papcr-Making Machinery; lmnd I do hereby declare the following to be a. full, clear, andV exact description thereof, which will enable others skilled in the nrt to which it I.ppertnin's to make and use the same, refer- E, the up' er plate of the suction-box. The object of my invention is to diminish the weer of the wire-cloth, which is n heavy expense to the manuncturer. This I accomplish by covering the rollers on which the wirc-c1oth moves, as also the couch-roll', with soft vulcanized rubber.

I Vfurtlner construct the upper surface of the suction- .box of n perforated plate of `soft vulcanized rubber,

or of strips of the sinne material, so that the wireclhth is supported by soft and yielding surfaces.

- What I claim as new, and desire to secure by Letlters Patent' of the United States, s-

1. The rollers on which the wire-cloth moves, when mode of soft vulcanized rubber, or covered therewith.

2. The upper surface of the suction-box, when constructed of a. perforated plate of soft vulcanized 4rubbei-,Vor of strips of the same material.

3. Constructing the surfaces on which the wire--V cloth moves either wholly or in part of soft vulcanized rubber.

. WM. W. HARDING.

Witnesses:

J. R. MCFETRIDGE, W. F. DAWSON. 

